1. Graduate Studies Program in Cardiology, School of Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
2. Interdisciplinary Sleep Research Laboratory, Hospital de Clínicas de Porto Alegre (LIPES-HCPA), Porto Alegre, RS, Brazil
3. Graduate Studies Program in Medical Sciences, School of Medicine, UFRGS, Brazil
4. Division of Cardiology, HCPA, Porto Alegre, RS, Brazil
5. Exercise Research Laboratory, UFRGS, Porto Alegre, RS, Brazil